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Investigation of Mechanical Properties in Ductile Iron with Alloyed and Unalloyed at Time and Temperature on Austempering T.
The progress of spheroidal graphite iron's properties was significantly influenced by the pace of cooling and the extinguishing process.
These factors make it necessary to continually create new materials and consider everything.
Stage II: ɣ HC→ α + Carbide Stage II response isn't positive for property upgrade of nodular iron, since it causes the embrittlement and the mechanical properties of ADI to diminish.
[7] Kim Yoon Jun, Shin Hocheol, Park Hyounsoo and Lim Jong Dae , Investigation into mechanical properties of austempered ductile cast iron (ADI) in accordance with austempering temperature, Materials Letters, vol 62, pp 357-360, 2008

The formed milling cutters are usually used in the processing of turnout, and the milling force is an active factor in the milling process which affects the functions of the machine tool and the enactment of process parameters, then the processing quality of turnouts is affected.
The material for turnout is high-manganese steel ZGMn13, which is difficult to be machined and has the properties of high hardness and strength, the chemical compositions and physical properties are shown in Table 1 and Table 2.
workpiece tool Fig.1 High-speed railway turnout Fig.2 Schematic diagram of curved switch rail milling Table 1 The chemical composition of high-manganese steel High-Manganes Steel [] [] [] [] [] 0.9～1.3 11～14 0.3～0.8 0.05 0.07 Table 2 The physical properties of high-manganese steel Steel No. [] [] [] [] ZGMn13 0.9～1.3 11～14 0.3～0.8 0.05 0.07 According to the material properties of the turnout, the features of the workpiece, and processing efficiency requirements, formed milling cutters (Fig.3) are usually used in the milling processing (Fig.2).
In addition, according to the dynamic mechanical properties of materials, the relation between true shear stress and strain is
Through analyzing, it is found that several factors lead to the error.

There are many factors affecting the bentonite water characteristics curve, such as initial water content, initial dry density, mineral ingredients, clearance structure, dry and wet circulation, stress history, stress status and etc.[1]; therefore, researching influences on the bentonite water characteristics curve by factors is significant.
The pore size distribution (PSD) acquired from mercury injection apparatus (MI) is important parameters reflecting structure of the bentonite, which is linked with many properties of the bentonite, such as transmission and permeation of heat, water and air, deformation property and etc [2].
Testing results and analysis Influences on soil and water characteristics curve by factors To analyze influences on the soil and water characteristics curve by factors, 3 groups of comparison tests have been carried out.
Conclusion A series of parallel and comparison tests are used to discuss influences on the soil and water characteristic curve by factors.
Macroscopic behavior and microstruetural properties of a kaolinite clay under controlled mechanical and hydraulic state.

Thus, we draw the conclusion thermal refining is an effective way to improve mechanical properties and delayed fracture resistance of high strength construction steel bars.
This paper analyzes the effect of heat treatment on mechanical properties and delayed fracture resistance of steel bars, and according to exiting problem such as poor delayed fracture resistance, mechanical property instability, high yield ratio and so on, some suggestions are put forward, which center on the thought of improving comprehensive properties of construction steel bars.
The quenching temperature affects the austenitizing degree, grain size of austenite and martensite, and the mechanical properties of the samples.
b) a) Fig.3 Effects of heat treatment on mechanical properties of steel bar The variations of strength and elongation of steel bar with tempering temperature are shown in Fig. 3b.
Thus, delayed fracture is one of the largest factors that obstruct the strengthening of steels [4, 5].

Both these factors have been brought together in the Interdependence Theory [8].
Large agglomerates affect mechanical integrity of castings.
Alloy composition changes and mechanical properties may not be desirable.
Some elements are detrimental to mechanical properties.
If one could be identified it could have a significant effect on the mechanical properties of this group of alloys.

However, the study for Ti6Al4V focus on microstructure, welding process, general Mechanical properties [1-3]and general Fatigue Property [4-6],The study for Fatigue Property of argon arc welding at corrosion condition of Ti6Al4V is still lacking, We studied Fatigue Property of welding joints of Ti6Al4V plate via simulate atmosphere condition and salt fog condition in the lab.
The plates thickness is 2.0mm, Chemical composition (wt%) of Ti6Al4V titanium alloy show:Al6.20%, V3.98%, Fe0.15%, Si0.06%, C0.09%, N0.05%, H0.018%, O0.15%, Ti is other, raw material status is annealed, mechanical properties of base materialσb=945MPa, σ0.2=889MPa, δ5=16.3%, ψ=36.2%..
Fatigue specimen of TI6Al4V welding were divided into two groups, one group is the specimen without hole, specimen outline shows in Figures1, it’s σb=968MPa, σ0.2=868MPa and stress concentration factor Kt=1; the other group is the specimen with holes, the two drilled holes locate in heat affected zone (HAZ), the distances between two holes is 10mm.
Stress concentration factor of welding specimen without holes is Kt=1, stress concentration factor of welding specimen with holes is Kt=3, The results indicate that tress concentration factor can strongly affect fatigue strength of Ti6Al4V titanium welding joints.
Microstructures and properties of TC4 alloy joints welded by the electron beam welding.

Glass Fiber Reinforced Plastics composites have an increased application in recent days, due to its enhanced structural properties, Mechanical and thermal properties.
Introduction Glass fiber Reinforced Plastics (GFRP) are widely being used in the automotive, machine tool industry, aerospace components, sporting equipment’s [1] because of their particular mechanical and physical properties such as specific strength and high specific stiffness.
The full factorial design is the most efficient way of conducting the experiment for that three factors and each factor at three levels of experiments is used.
Hence as per Levelsfactor (factors to power of levels) formula = Levelsfactors , N = 33 = 27, N- number of experiments.
[3] Sonbatry El, Khashaba U.A, Machaly T, Factors affecting the machinability of GFRP/epoxy composites, Comp Structures, 63 (2004) 329-338

The existence of clearance in joints also leads to the impact dynamic load, and affects the transfer of the system load, the destruction and failure of the mechanism.
Currently, the researches of joint clearance are usually focused on the property of materials or microcosmic wear, but research of dynamic wear of clearance joint in mechanical system working in high-speed is less carried out, thus it is necessary to study the dynamic wear of clearance joint.
Vector model of joints with clearance The clearance between joints usually brings about the inside contact which have two properties.
First property is that the system becomes variable topology structural system.
The reason is that the existence of clearance causes the contact force which affects the acceleration of the system.

The substrate temperature is the main factor on the photoelectric properties of the ITO films.
IV 321 347 363 353 K1 94 90 84 87 Trans- K2 90 92 85 87 mittance K3 87 83 92 89 K4 80 86 90 88 S 14 6 8 2 3.2 Electrical properties of the ITO thin films According to sheet resistance results shown in table 1, the order of the factors affecting resistance of ITO thin films was: the substrate temperature, the carrier gas flow, the annealing temperature and the proportion of the indium and tin.
While with the same substrate temperature of 350oC, the resistance becomes smaller with the gas speed increasing. 3.3 Optical properties of the ITO thin films According to average transmittance in table 1, the order of the factors affecting transmittance of ITO thin films was: the substrate temperature, the annealing temperature, the carrier gas flow of the air, and the proportion of the indium and tin.
In summary, the substrate temperature is the most influential factor for the photoelectric properties of ITO thin films.
The substrate temperature is the main factor on the photoelectric properties of the ITO films.

Soaked in Ca (OH)2 saturated solution and alkaline medium like concrete, BFRP bar has good durability and keeps high stability. 2.1.3 Mechanical Property Fiber composition and content are the determinants of the mechanical properties of BFRP bar.
The summary of mechanical property of BFRP bar is shown in Table 1.
There are many factors to be examined about the impact of bond properties, such as diameter, bond length, concrete strength and temperature, etc.
Although some scholars have already studied the above aspects, however, due to many influence factors and the great difference, there are differences in the test results.
An experimental study of different factors affecting the bond of NSM FRP bars in concrete[J].